for mod in mousedev psmouse pcspkr 
    do 
	grep -q -s "$mod" /etc/modprobe.preload || 	/bin/echo -e "\n$mod" >> /etc/modprobe.preload
    done
grep "^realcap"  /etc/modprobe.preload &> /dev/null
if [ $? -ne 0 ] ; then
    	grep "^capability"  /etc/modprobe.preload &> /dev/null
    	if [ $? -ne 0 ] ; then
	   /bin/echo -e "\nrealcap" >> /etc/modprobe.preload
	fi
    	if [ $? -eq 0 ] ; then
	   perl -pi -e 's;capability;realcap;' /etc/modprobe.preload
	fi
fi